YT has an independent laboratory collaborated with TÜV Rheinland, YT has a self-owned laboratory  for thermal packaging validation. The core equipment, programmable step-in climate chamber can precisely simulate the real or standard conditions (e.g. ISTA 7D) in the range of -40~155 ℃, which strongly supports the certified validation process for new and existing packagings. All the  equipment will be annually calibrated by third party according to national standards. Walk-in high and low temperature test chamber for the validation of newly developed thermal packagings. And calibration based on JJF 1101-2019 environmental test equipment temperature, humidity parameters calibration specifications.